Arco de Santa Catalina
One of the best-known sights in Antigua is the attractive yellow span of the Arco de Santa Catalina, bridging the appropriately-named Calle del Arco to the north of the Parque Central. It was originally built so that nuns could cross the street invisibly, and today it provides a picturesque frame for La Merced from the south. A clock tower was added during the 19th century reconstruction of the 1694 arch. Bars and shops now line the sidewalks immediately beneath the arch, and the road is closed to motorists on weekends to provide a relaxing pedestrian atmosphere.